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Electrical Cables

Electrical Cables
In capacitance grading of cables we use a _________ dielectric.

Hygroscopic
Porous
Homogeneous
Composite

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Electrical Cables
The insulating material for cables should

Be acid proof
All of the listed here
Be non-hygroscopic
Be non-inflammable

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Electrical Cables
Underground cables are laid at sufficient depth

To avoid being unearthed easily due to removal of soil
To minimize the effect of shocks and vibrations due to gassing vehicles, etc.
All of the listed here
To minimize temperature stresses

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Electrical Cables
Pressure cables are generally not used beyond

66 kV
11 kV
33 kV
132 kV

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Electrical Cables
Copper as conductor for cables is used as

Annealed
Hardened and tempered
Hard drawn
Alloy with chromium

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Electrical Cables
Low tension cables are generally used up to

600 V
400 V
1000 V
200 V

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